Data processing method for portable communication terminal and portable communication terminal

Abstract

A terminal data storage section (18) of a portable communication terminal (10) stores the importance level of each piece of stored data. A connection state prediction judging section (12) predicts a change in the communication state of the connection to a server (20). A terminal processing level determining section (13) determines the terminal processing level of data based on the prediction result. When a data access becomes necessary, a data access managing section (15) determines whether a data access destination is the portable communication terminal (10) itself or the server (20) based on the importance level of the data and the then terminal processing level. When the terminal processing level is changed, a data hold managing section (14) deletes the data whose importance level is changed to an importance level which inhibits the data from being held at the changed terminal processing level from the terminal data storage section (18).

Description

TECHNICAL FIELD[0001]The present invention relates to a data processing method for a portable communication terminal, and a portable communication terminal.BACKGROUND ART[0002]Portable communication terminals, typified by a cell phone, store user information or so, such as a telephone book, reception / transmission mail addresses, and mail texts, inside, and perform access, such as referring to the information or using it. When a portable communication terminal is lost, therefore, there is a risk that such confidential user information would be seen by a third person, and personal information or the like would be leaked.[0003]A thin client approach is known which has all data stored in a server and accesses the server at the time of data access to prevent such a risk. Unexamined Japanese Patent Application KOKAI Publication No. 2002-24175 (Patent Document 1) discloses a thin client terminal.Patent Document 1: Unexamined Japanese Patent Application KOKAI Publication No. 2002-24175DISCL...

AI Technical Summary

Benefits of technology

[0043]The present invention can reduce the risk of leakage of confidential information when the portable communication terminal is lost, and secure the user's convenience even in a poor communication state due to out of communication area, low communication speed or the like. This is because a change in a future communication state is predicted, and data to be held in the portable communication terminal is limited based on the terminal processing level determined according to the prediction result and the importance level given to each data.

Problems solved by technology

However, the terminal has a problem such that it cannot access data in a server when it is out of the communication range.

This raises a problem such that even with a terminal being connected, when the communication speed is low, data access takes time, deteriorating the response and lowering the user's convenience.

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